Process of dyeing and printing.



. by being first chrome inordmiteil.

e sii-Av ILAisLE cow UNI ED Siiurri PATENT @FFICE.

CARL MQLLENHOFF, OF LEVERKUSEN, NEAH C IL LOGNE, G-ERIEANY, ASSIGNOR To FARBE'NFABRIKEN VORIVI. FRLEEIDR. BilYER 3s 00., 013 ELBEBFELI), GERMANY, A

CORPORATION 033 GERMAN PRUOESS F DYEING tlND PRINTING;

No Drawing.

in "which the hydrogen atoms of the two outside nuclei only be Slllmllllllfifil, for exzu'nplc by hydroxyl groups, in llic iilaer, thus pro ducing very and deep SliiLCliS on either the animal or vegelublc fiber. Among these substances]. mention dcsoiiyulizziriii desox yllzivopurpurin or (legsoxyzmthmpurpurin with the formula:

and many others.

These reduction productions produced from oxyantln-ziquinoncs may he applied (lirectly to Wool either in an acid dye-oath, or in 11 both containing a chromium niordzint.

or they may be applied on chromed wool,

while cottonie most EzflVtlillagBOllSlj dyed The reduction products may also be employed for printing in conjunction witlipostes containingchronie incidents.

In carrying, out. my new process )l2l(j'li1- cally I can proceed follows: Prepare a. dye-bath containing 2 lo kilos oi? acetic Specification of Letters Patent.

Pwbeiitedl ec. 16, 1913.

Application illcd Zi'ovemlocr 23, 1999. Eel-21110. 529,517".

acid and 10 kilos of dcsozityzmtliropurpurin (paste containing 20 per cent. of the dye}. luntcr 10%) kilos of chromed W601, heat co boiling and boil during 1 l0 1-1- hours. A brilliant brown. shade results. Desdxyfievo purpurin. furnishes deep brown.

Prepare a. dyobzith containing 10 kilos of a 20 per cent paste of d'esoxyliavopurpurin. linlcr 100 kilos of chromed cotton yarn, heal; the cold both slowly to 80 C. and keep it at this tenqieraiure during some time. Dry, steam, soap and dry. A deep brown is thus obtained which is fast. to scoping.

Prepare a priming paste from T. kilos of (L 20 per cenl. paste of desoxylliivopurpurin,

'71} liters; of cliromiui'n zicciatc (20 36.) and E 5 parts oil starch limg'zicontli thickening. Print upon oiled cotton cloth, dry, steam, soap and dry. A brown fast to scoping re.- sults.

Prepare 2i dyclmili containing 2 to 5 kilos of acetic acid and kilos of a per cent. pusle of desoriyalizurin, enter 100 kilos of wool at a tcnioerzitin'c of SO to (3., heat slowly to boiling and boil during 5} to 1-}- hours. first brown thus obtained.

Frepiirezi dye-both conl'aining 10 kilos of a 2G per cent. puslc of dceoxyflnvopurpurin acid and 2 to kilos of acetic acid, enter 100 kilos oi wool at C., lie2it slowly to boiling and boil during 1 co 1?; hour. After cooling to about 50 to (30 C. add 1 to 1 kilos of bichronnite of potassium and 1. kilo of acetic acid, heel; to coiling and boil during 1}; to 1% hours. A "very beautiful rind fest; brown is lltill'edllfid, immersing the fibers in said both, and filimg the dyes on the fibers by heating.

The process of producing ast shades 4: on. textile liccrswhicli comprises perapring a dyclnilh coi'ilziining the reduction products of iilizzirin subslanccs which contain in the central nucleus only one atom of oxygen and which are substituted in the outside nuclei by heating in the presence of chromium" compounds. s

a. The process ofproducing fast shades on textile fibers which comprises preparing -a dye-bath containing the reduction products of alizarin substances which contain in the central nucleus only one atom of oxygen and which are substituted in the outside nuclei by hydroxyl groups, and in which products both keto groups have been reduced, immersing the fibers in said bath, and

fixing the dyes on the fibers by heating in the presence of chromium compounds.

5. The process of producing fast shades on textile fibers which comprises treating the fibers with the reduction products of alizarin substances which contain in the central nucleus only one atom of oxygen, and in which products both heto groups have been reduced, and fixing the dyes upon the fibers by heating in the presence of chromium compounds.

6. The process of producing fast shades on textile fibers which comprises treating the fibers with the reduction products of alizarin substances which contain in the central nucleus only one atom of oxygen ,alizarin substances which contain ing the fibers with the reduction products of in the central nucleus only one atom of oxygen, and which are substituted in the outside nuclei by hydroxyl, and in which products both keto groups have been reduced, and fixing the dyes upon the fibers by heating.

9. The process of producing fast shades "(in cotton fibers which comprises mordanting the fibers with chromium compounds, treating the fibers with the reduction'products of alizarin substances which contain in the central nucleus only one-atom of oxygen, and in which products both keto groups have been reduced, and fixing the dyes upon the fibers by heating.

10. The process of producing fast shades on cotton fibers which comprises mordanting the fibers with chromium compounds, treating the fibulfF with the reduction products of alizarin substances which contain in the central nucleus only one atom of oxygen and which are substituted in the outside nuclei by hydroxyl ,-f and in which products both lreto groups ha'ye been reduced, and fixing the dyes uponthe fibers by heating.

In testimony whereof I have hereunto set my hand in the'presence of two subscribing 1 4c and which are substituted in the outside witnesses.

nuclei by hydroxyl and in which products a both keto groups have been reduced, and CARL MOLLENHOFI fixing the dyes upon the fibers by heating in vVitnesses:

the presence of chromium compounds.

7. The process of producing fast shades O'r'ro Ktinro," Crms. J, WRIGHT.

It is hereby certified that in Letters Patent. No. 1,081,62l. granted December 16. 19l3, upon the application bf Carl Mollenholi, bf Leverkusen, near Cologne, Ger

many, for an improvement in Processes of Dyeing and Printing, an error appears l in the printed spec fication requiring correction as follows: Page 1, line 104, for the word preapring" read 'urepo/r/Tny; and that the said Letters Patent should be t read with this correction therein that the same may conform to the record of the I case in the Patent Otfice.

Signed and sealed this 10th day of February, A. I1, 191%.

5th. J. T. NEWTON,

Acting Commissioner of Patents.

)orrcctlon in Letters Patent No. 1,061,62l

by heating in the presence of chromium" compounds. s

a. The process ofproducing fast shades on textile fibers which comprises preparing -a dye-bath containing the reduction products of alizarin substances which contain in the central nucleus only one atom of oxygen and which are substituted in the outside nuclei by hydroxyl groups, and in which products both keto groups have been reduced, immersing the fibers in said bath, and

fixing the dyes on the fibers by heating in the presence of chromium compounds.

5. The process of producing fast shades on textile fibers which comprises treating the fibers with the reduction products of alizarin substances which contain in the central nucleus only one atom of oxygen, and in which products both heto groups have been reduced, and fixing the dyes upon the fibers by heating in the presence of chromium compounds.

6. The process of producing fast shades on textile fibers which comprises treating the fibers with the reduction products of alizarin substances which contain in the central nucleus only one atom of oxygen ,alizarin substances which contain ing the fibers with the reduction products of in the central nucleus only one atom of oxygen, and which are substituted in the outside nuclei by hydroxyl, and in which products both keto groups have been reduced, and fixing the dyes upon the fibers by heating.

9. The process of producing fast shades "(in cotton fibers which comprises mordanting the fibers with chromium compounds, treating the fibers with the reduction'products of alizarin substances which contain in the central nucleus only one-atom of oxygen, and in which products both keto groups have been reduced, and fixing the dyes upon the fibers by heating.

10. The process of producing fast shades on cotton fibers which comprises mordanting the fibers with chromium compounds, treating the fibulfF with the reduction products of alizarin substances which contain in the central nucleus only one atom of oxygen and which are substituted in the outside nuclei by hydroxyl ,-f and in which products both lreto groups ha'ye been reduced, and fixing the dyes uponthe fibers by heating.

In testimony whereof I have hereunto set my hand in the'presence of two subscribing 1 4c and which are substituted in the outside witnesses.

nuclei by hydroxyl and in which products a both keto groups have been reduced, and CARL MOLLENHOFI fixing the dyes upon the fibers by heating in vVitnesses:

the presence of chromium compounds.

7. The process of producing fast shades O'r'ro Ktinro," Crms. J, WRIGHT.

It is hereby certified that in Letters Patent. No. 1,081,62l. granted December 16. 19l3, upon the application bf Carl Mollenholi, bf Leverkusen, near Cologne, Ger

many, for an improvement in Processes of Dyeing and Printing, an error appears l in the printed spec fication requiring correction as follows: Page 1, line 104, for the word preapring" read 'urepo/r/Tny; and that the said Letters Patent should be t read with this correction therein that the same may conform to the record of the I case in the Patent Otfice.

Signed and sealed this 10th day of February, A. I1, 191%.

5th. J. T. NEWTON,

Acting Commissioner of Patents.

)orrcctlon in Letters Patent No. 1,061,62l 

